If that is truly her facebook page, and "Joanna only shares some information publicly", then she has decided to share with us only her full name, that she lives in New York City, is from Nevada City, and she is female. We have to assume from the photo that she plays the harp. Not a lot of sharing going on.
Some quick facebook stalking of Joanna's friends/family indicates that this is not her account, since none of them seem to be friends with this account.